Table A6: Performance of various aggregating methods  $(\%)$  - The bold numbers show maximum accuracy per model/dataset. CLIP strongly and consistently favors 10-crop over other settings.
(a)	(b) zoom-in	(c) zoom-out	(d) zoom-224	(e) 5-crop	(f) 10-crop [38]
Dataset	1-crop	Max	Mean	Max	Mean	Max	Mean	Max	Mean	Max	Mean
ResNet-18	IN	69.45	68.45 (-1.00)	71.45 (+2.00)	60.33	56.79	67.85	68.70	70.61	71.32	70.83	71.85
ReAL	76.94	76.33 (-0.61)	79.94 (+3.00)	67.64	63.92	75.73	76.74	78.26	79.01	78.42	79.46
IN-A	1.37	11.68 (+10.31)	5.48 (+4.11)	2.44	2.19	3.41	2.69	3.16	2.13	3.28	1.87
IN-R	32.14	30.60 (-1.54)	28.95 (-3.19)	29.08	27.28	32.29	32.54	33.99	33.38	34.59	33.83
IN-S	19.41	14.86 (-4.55)	14.34 (-5.07)	14.48	11.49	17.80	17.83	20.83	20.70	21.39	21.06
ON	27.59	28.21 (+0.62)	25.92 (-1.67)	16.11	14.10	22.82	22.86	24.77	20.91	25.47	21.03
ResNet-50	IN	75.75	73.24 (-2.51)	77.30 (+1.55)	69.06	66.42	74.45	75.39	76.67	77.13	76.89	77.43
ReAL	82.63	80.36 (-2.27)	84.68 (+2.05)	76.35	73.85	81.96	82.85	83.67	84.06	83.82	84.31
IN-A	0.21	16.11 (+15.9)	6.23 (+6.02)	2.79	2.19	3.04	2.11	2.28	0.95	2.43	1.00
IN-R	35.39	33.58 (-1.81)	32.73 (-2.66)	35.85	33.22	36.64	36.44	37.47	36.50	38.23	36.86
IN-S	22.91	16.89 (-6.02)	17.80 (-5.11)	19.51	17.12	21.60	21.66	24.71	24.51	24.94	24.74
ON	36.18	34.56 (-1.62)	34.22 (-1.96)	27.10	25.32	31.78	31.98	33.34	29.58	33.93	29.86
ViT-B/32	IN	75.75	74.35 (-1.40)	79.31 (+3.56)	71.48	69.47	72.66	73.67	77.33	77.73	77.30	77.87
ReAL	81.89	80.22 (-1.67)	85.97 (+4.08)	77.95	76.28	79.25	80.31	83.24	83.80	83.17	83.87
IN-A	9.64	24.69 (+15.05)	14.29 (+4.65)	7.79	5.48	8.12	7.39	12.19	9.88	12.32	9.67
IN-R	41.29	39.90 (-1.39)	40.06 (-1.23)	39.05	36.21	39.52	39.28	43.90	43.17	44.31	43.28
IN-S	26.83	19.74 (-7.09)	20.89 (-5.94)	22.37	19.25	25.06	25.21	28.72	28.66	28.94	28.76
ON	30.89	32.88 (+1.99)	33.92 (+3.03)	22.56	19.51	22.75	22.72	26.96	24.98	27.14	24.97
VGG-16	IN	71.37	69.60 (-1.77)	72.46 (+1.09)	64.75	59.95	69.51	70.48	72.31	73.09	72.67	73.53
ReAL	78.90	77.23 (-1.67)	80.59 (+1.69)	72.55	67.68	77.48	78.58	79.80	80.42	80.13	80.80
IN-A	2.69	11.55 (+8.86)	6.24 (+3.55)	3.33	2.77	4.69	3.87	4.87	3.19	5.09	3.19
IN-R	26.98	26.18 (-0.80)	24.74 (-2.24)	28.01	25.62	27.76	27.78	28.75	27.95	29.23	28.35
IN-S	16.78	13.30 (-3.48)	13.05 (-3.73)	15.18	13.37	15.82	15.97	17.80	17.63	18.28	17.92
ON	28.32	26.96 (-1.36)	26.15 (-2.17)	19.88	16.42	23.47	23.60	26.21	21.65	26.52	21.80
AlexNet	IN	56.16	54.74 (-1.42)	56.98 (+0.82)	40.78	27.09	51.80	51.50	57.86	58.60	58.26	59.11
ReAL	62.67	61.46 (-1.21)	64.35 (+1.68)	45.84	30.58	58.25	58.16	64.53	65.39	64.98	65.94
IN-A	1.75	4.65 (+2.90)	3.27 (+1.52)	1.56	1.23	2.31	1.97	2.53	2.04	2.64	2.03
IN-R	21.10	20.65 (-0.45)	17.97 (-3.13)	15.72	11.25	19.91	19.55	22.79	21.86	23.26	22.16
IN-S	10.05	7.94 (-2.11)	6.54 (-3.51)	5.82	2.72	8.29	7.39	10.84	10.65	11.20	10.80
ON	14.23	14.91 (+0.68)	11.80 (-2.43)	6.11	3.75	9.65	9.01	12.63	9.57	12.84	9.58
CLIP-ViT-L/14	IN	75.03	70.01 (-5.02)	74.45 (-0.58)	72.01	72.21	74.45	76.04	76.77	76.91	76.72	77.00
ReAL	80.68	76.37 (-4.31)	81.31 (+0.63)	78.28	78.93	81.45	82.05	82.26	82.55	82.26	82.55
IN-A	71.28	76.57 (+5.29)	68.16 (-3.12)	60.71	49.51	71.69	70.04	77.80	76.61	78.25	76.83
IN-R	87.74	84.12 (-3.62)	83.54 (-4.20)	86.84	86.29	88.12	88.24	89.64	89.66	90.01	89.94
IN-S	58.23	51.88 (-6.35)	56.06 (-2.17)	57.14	57.43	59.00	59.90	61.28	61.61	61.59	62.07
ON	66.32	60.20 (-6.12)	58.10 (-8.22)	56.57	58.11	62.44	62.65	66.70	64.88	66.87	64.97